Figure 4: (a) Spatial distribution of tidal-random ratio RTR between the variances of the synthetic tidal currents timeseries (computed with 8 major harmonics) and the random (not-tidal) variance of the model currents speed at sea surface for 227 (active and closed) SEPA fin-fish farm sites; (b) The ratio RTR as a sorted distribution, both are shown with same coloured scale. (c) Spatial distribution of the ratio between the variances of the synthetic currents timeseries, computed with 8 major tidal harmonics, and the total variance of the model currents speed at the sea surface in the area of interest in 2016.